{
  "id": "type-n02",
  "revision": "8f69a886858d8103fefe68aecfe69d8f1ffd9ab08e4e40e82b6b1a9da37540f5",
  "regions": [
    {
      "id": "mobile",
      "label": "Mobile",
      "parent": null
    },
    {
      "id": "server",
      "label": "Server",
      "parent": null
    },
    {
      "id": "storage",
      "label": "Storage",
      "parent": null
    }
  ],
  "nodes": [
    {
      "id": "picker",
      "label": "Photo picker",
      "kind": "N13",
      "region": "mobile",
      "ports": [
        {
          "id": "photo",
          "profile": "P01",
          "contract": "SelectedPhotoV1",
          "polarity": "Offer"
        }
      ]
    },
    {
      "id": "upload",
      "label": "Profile photo upload",
      "kind": "N02",
      "region": "server",
      "ports": [
        {
          "id": "photo",
          "profile": "P01",
          "contract": "SelectedPhotoV1",
          "polarity": "Require"
        },
        {
          "id": "grant",
          "profile": "P20",
          "contract": "ObjectWriteGrantV1",
          "polarity": "Require"
        },
        {
          "id": "put",
          "profile": "P02",
          "contract": "PutPhotoRequestReceiptV1",
          "polarity": "Require"
        },
        {
          "id": "commit",
          "profile": "P09",
          "contract": "ProfilePhotoCompareVersionV1",
          "polarity": "Require"
        },
        {
          "id": "orphan",
          "profile": "P03",
          "contract": "OrphanPhotoCleanupV1",
          "polarity": "Neutral"
        }
      ]
    },
    {
      "id": "policy",
      "label": "Upload policy",
      "kind": "N33",
      "region": "server",
      "ports": [
        {
          "id": "grant",
          "profile": "P20",
          "contract": "ObjectWriteGrantV1",
          "polarity": "Offer"
        }
      ]
    },
    {
      "id": "objects",
      "label": "R2 object store",
      "kind": "N26",
      "region": "storage",
      "ports": [
        {
          "id": "put",
          "profile": "P02",
          "contract": "PutPhotoRequestReceiptV1",
          "polarity": "Offer"
        },
        {
          "id": "delete",
          "profile": "P02",
          "contract": "DeleteObjectRequestReceiptV1",
          "polarity": "Offer"
        }
      ]
    },
    {
      "id": "profile",
      "label": "Profile authority",
      "kind": "N21",
      "region": "storage",
      "ports": [
        {
          "id": "photo",
          "profile": "P09",
          "contract": "ProfilePhotoCompareVersionV1",
          "polarity": "Offer"
        }
      ]
    },
    {
      "id": "cleanup",
      "label": "Orphan cleanup",
      "kind": "N06",
      "region": "server",
      "ports": [
        {
          "id": "remove",
          "profile": "P03",
          "contract": "OrphanPhotoCleanupV1",
          "polarity": "Neutral"
        },
        {
          "id": "delete",
          "profile": "P02",
          "contract": "DeleteObjectRequestReceiptV1",
          "polarity": "Require"
        }
      ]
    }
  ],
  "relations": [
    {
      "id": "selection",
      "kind": "H02",
      "incidences": [
        {
          "node": "picker",
          "port": "photo",
          "role": "source",
          "ordinal": 0
        },
        {
          "node": "upload",
          "port": "photo",
          "role": "target",
          "ordinal": 0
        }
      ]
    },
    {
      "id": "grant",
      "kind": "H23",
      "incidences": [
        {
          "node": "policy",
          "port": "grant",
          "role": "principal",
          "ordinal": 0
        },
        {
          "node": "upload",
          "port": "grant",
          "role": "resource",
          "ordinal": 0
        }
      ]
    },
    {
      "id": "write",
      "kind": "H05",
      "incidences": [
        {
          "node": "upload",
          "port": "put",
          "role": "caller",
          "ordinal": 0
        },
        {
          "node": "objects",
          "port": "put",
          "role": "callee",
          "ordinal": 0
        }
      ]
    },
    {
      "id": "commit",
      "kind": "H05",
      "incidences": [
        {
          "node": "upload",
          "port": "commit",
          "role": "caller",
          "ordinal": 0
        },
        {
          "node": "profile",
          "port": "photo",
          "role": "callee",
          "ordinal": 0
        }
      ]
    },
    {
      "id": "orphan",
      "kind": "H17",
      "incidences": [
        {
          "node": "upload",
          "port": "orphan",
          "role": "forward",
          "ordinal": 0
        },
        {
          "node": "cleanup",
          "port": "remove",
          "role": "compensation",
          "ordinal": 0
        }
      ]
    },
    {
      "id": "remove",
      "kind": "H05",
      "incidences": [
        {
          "node": "cleanup",
          "port": "delete",
          "role": "caller",
          "ordinal": 0
        },
        {
          "node": "objects",
          "port": "delete",
          "role": "callee",
          "ordinal": 0
        }
      ]
    }
  ]
}